Structural High Strength Steel

Structural steel or high strength is an extremely tough and durable material. It helps to improve the performance and safety of vehicles and structures where weight saving is required.

It is most commonly used to make heavy road vehicles, dumper bodies or chassis (the framework of a vehicle). High strength steel is also used in bridge components, pressure vessels, power plants and engineering applications.

High Strength S690 QL1

Cold-Forming

The steel is suitable for cold-forming adhering to a bending or folding radius of > 4 times plate thickness longitudinal and > 3 times plate thickness transverse to rolling direction. A subsequent stress relief annealing is possible up to a temperature of 580°C.

Hot-Forming

Hot-forming above 580°C is possible. A subsequent quenching and tempering has to be carried out according to the delivery condition.

The weldability is excellent and all the common welding processes can be used. Preheating is not necessary under normal conditions. A narrow heat affected zone (HAZ) with a somewhat lower strength is formed immediately adjacent to the weld. The softening tendency can be limited by avoiding unnecessarily high heat input during welding. In applications where high strength is required, the welded joints should be placed in the less stressed locations. So, the effect of welds on the structure will be minimised.

Cutting

Optim™ 700 MC steels can be cut easily by using thermal methods such as flame, plasma and laser cutting. Mechanical cutting can also be applied, but attention must be paid to the stiffness of the equipment, blade condition and clearance, and support of the work piece.

Download and read through our datasheets below to know more.

Data Sheets

Please see below a list of Data Sheets. These can be viewed / downloaded in PDF format simply by clicking which one you would like.